Matthew 11:27

"Everything has been handed over to me by my Father; neither does any one know the Son, except the Father, nor any one know the Father except the Son, and those to whom the Son chooses to reveal Him.

John 17:3

And this is eternal life, to know thee, the only true God, and Jesus Christ whom thou hast sent.

1 John 5:20

And we know that the Son of God is come, and has granted us and understanding, so that we may come to know him who is true. And we are in him who is true, even in his Son Jesus Christ. This is the true God, and life eternal.

Treasury of Scripture Knowledge

Summary

The fear of the LORD is the beginning of wisdom: and the knowledge of the holy is understanding.

Bible References

The knowledge

Matthew 11:27
"Everything has been handed over to me by my Father; neither does any one know the Son, except the Father, nor any one know the Father except the Son, and those to whom the Son chooses to reveal Him.
John 17:3
And this is eternal life, to know thee, the only true God, and Jesus Christ whom thou hast sent.
1 John 5:20
And we know that the Son of God is come, and has granted us and understanding, so that we may come to know him who is true. And we are in him who is true, even in his Son Jesus Christ. This is the true God, and life eternal.